diff --git a/src/main/target/AIR32/target.c b/src/main/target/AIR32/target.c
index 47789fd4f8..378627daaf 100644
--- a/src/main/target/AIR32/target.c
+++ b/src/main/target/AIR32/target.c
@@ -1,8 +1,24 @@
+/*
+ * This file is part of Cleanflight.
+ *
+ * Cleanflight is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Cleanflight is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Cleanflight.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
-#include <stdbool.h>
 #include <stdint.h>
 
 #include <platform.h>
+#include "drivers/io.h"
 #include "drivers/pwm_mapping.h"
 
 const uint16_t multiPPM[] = {
@@ -42,14 +58,13 @@ const uint16_t airPWM[] = {
 };
 
 const timerHardware_t timerHardware[USABLE_TIMER_CHANNEL_COUNT] = {
-    { TIM3,  IO_TAG(PA4),  TIM_Channel_2, TIM3_IRQn,               1, IOCFG_AF_PP,    GPIO_AF_2, 0}, // PWM1  - PA4  - *TIM3_CH2
-    { TIM3,  IO_TAG(PA6),  TIM_Channel_1, TIM3_IRQn,               1, IOCFG_AF_PP,    GPIO_AF_2, 0}, // PWM2  - PA6  - *TIM3_CH1, TIM8_BKIN, TIM1_BKIN, TIM16_CH1
-    { TIM3,  IO_TAG(PB0),  TIM_Channel_3, TIM3_IRQn,               1, IOCFG_AF_PP,    GPIO_AF_2, 0}, // PWM3  - PB0  - *TIM3_CH3, TIM1_CH2N, TIM8_CH2N
-    { TIM3,  IO_TAG(PB1),  TIM_Channel_4, TIM3_IRQn,               1, IOCFG_AF_PP,    GPIO_AF_2, 0}, // PWM4  - PB1  - *TIM3_CH4, TIM1_CH3N, TIM8_CH3N
-    { TIM2,  IO_TAG(PA1),  TIM_Channel_2, TIM2_IRQn,               1, IOCFG_AF_PP,    GPIO_AF_1, 0}, // PWM5  - PA1  - *TIM2_CH2, TIM15_CH1N
-    { TIM2,  IO_TAG(PA2),  TIM_Channel_3, TIM2_IRQn,               1, IOCFG_AF_PP,    GPIO_AF_1, 0}, // PWM6  - PA2  - *TIM2_CH3, !TIM15_CH1
-    { TIM15, IO_TAG(PA3),  TIM_Channel_2, TIM1_BRK_TIM15_IRQn,     1, IOCFG_AF_PP,    GPIO_AF_9, 0}, // PWM7  - PA3  - *TIM15_CH2, TIM2_CH4
-    { TIM1,  IO_TAG(PA8),  TIM_Channel_1, TIM1_CC_IRQn,            1, IOCFG_AF_PP,    GPIO_AF_6, 0}, // PWM8  - PA8  - *TIM1_CH1, TIM4_ETR
-    { TIM17, IO_TAG(PA7),  TIM_Channel_1, TIM1_TRG_COM_TIM17_IRQn, 0, IOCFG_AF_PP_PD, GPIO_AF_1, 0}, // PPM   - PA7  - *TIM17_CH1, TIM1_CH1N, TIM8_CH1
+    { TIM3,  IO_TAG(PA4),  TIM_Channel_2, TIM3_IRQn,               1, IOCFG_AF_PP,    GPIO_AF_2 }, // PWM1  - PA4  - *TIM3_CH2
+    { TIM3,  IO_TAG(PA6),  TIM_Channel_1, TIM3_IRQn,               1, IOCFG_AF_PP,    GPIO_AF_2 }, // PWM2  - PA6  - *TIM3_CH1, TIM8_BKIN, TIM1_BKIN, TIM16_CH1
+    { TIM3,  IO_TAG(PB0),  TIM_Channel_3, TIM3_IRQn,               1, IOCFG_AF_PP,    GPIO_AF_2 }, // PWM3  - PB0  - *TIM3_CH3, TIM1_CH2N, TIM8_CH2N
+    { TIM3,  IO_TAG(PB1),  TIM_Channel_4, TIM3_IRQn,               1, IOCFG_AF_PP,    GPIO_AF_2 }, // PWM4  - PB1  - *TIM3_CH4, TIM1_CH3N, TIM8_CH3N
+    { TIM2,  IO_TAG(PA1),  TIM_Channel_2, TIM2_IRQn,               1, IOCFG_AF_PP,    GPIO_AF_1 }, // PWM5  - PA1  - *TIM2_CH2, TIM15_CH1N
+    { TIM2,  IO_TAG(PA2),  TIM_Channel_3, TIM2_IRQn,               1, IOCFG_AF_PP,    GPIO_AF_1 }, // PWM6  - PA2  - *TIM2_CH3, !TIM15_CH1
+    { TIM15, IO_TAG(PA3),  TIM_Channel_2, TIM1_BRK_TIM15_IRQn,     1, IOCFG_AF_PP,    GPIO_AF_9 }, // PWM7  - PA3  - *TIM15_CH2, TIM2_CH4
+    { TIM1,  IO_TAG(PA8),  TIM_Channel_1, TIM1_CC_IRQn,            1, IOCFG_AF_PP,    GPIO_AF_6 }, // PWM8  - PA8  - *TIM1_CH1, TIM4_ETR
+    { TIM17, IO_TAG(PA7),  TIM_Channel_1, TIM1_TRG_COM_TIM17_IRQn, 0, IOCFG_AF_PP_PD, GPIO_AF_1 }, // PPM   - PA7  - *TIM17_CH1, TIM1_CH1N, TIM8_CH1
 };
-